I'm in the minority, I know, but I hate the rubber sleeves. I don't really get the purpose of them, played pool for years without them and my hand never slipped. Billiards cue is generally thicker in the back than a pool cue, and with the sleeve, it's like a baseball bat.
Plus I hate stroking a shot and it clings on my shirt. Even if you wear just a t-shirt, the sleeve just clings to you.
Somebody please explain to me why you need a rubber sleeve on a billiards cue. "To prevent your hand from slipping" doesn't really work, or else pool players, who shoot 10X more shots per hour than a billiards player and move around more would be lost without them.
It's just a "thing", isn't it?